High-resolution frequency-domain spectroscopy for water vapor with coherent and continuous terahertz wave

被引：12

作者：

Ruan, Cunjun ^{[1
,2
]}

Kong, Deyin ^{[1
]}

Dai, Jun ^{[1
]}

Chen, Kanglong ^{[1
]}

Guo, Sujie ^{[1
]}

Wu, Xiaojun ^{[1
]}

机构：

[1] Beihang Univ, Sch Elect & Informat Engn, Beijing 100191, Peoples R China

[2] Beihang Univ, Beijing Key Lab Microwave Sensing & Secur Applica, Beijing 100191, Peoples R China

来源：

CHINESE OPTICS LETTERS | 2019年 / 17卷 / 07期

基金：

中国国家自然科学基金;

关键词：

TRANSMISSION; SO2;

D O I：

10.3788/COL201917.073001

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

High-resolution frequency-domain spectroscopy ( FDS) is set up using a coherent and continuous wave terahertz ( THz) emitter and receiver. THz waves are generated and detected by two photomixers with two distributed feedback ( DFB) lasers. Atmospheric water vapor with different relative humidity is systematically investigated by the FDS. A high-frequency resolution of similar to 14 MHz is obtained with the help of Hilbert transformation, leading to a well resolved and distinct transmittance characterization of water vapor. Compared with conventional THz time-domain spectroscopy, the high-resolution continuous wave THz spectrometer is one of the most practical systems in gas-phase molecular sensing, identification, and monitoring.

引用

页数：5

共 27 条

[1] Multiple component analysis of cigarette smoke using THz spectroscopy, comparison with standard chemical analytical methods [J].

Bigourd, D. ;

Cuisset, A. ;

Hindle, F. ;

Matton, S. ;

Bocquet, R. ;

Mouret, G. ;

Cazier, F. ;

Dewaele, D. ;

Nouali, H. .

APPLIED PHYSICS B-LASERS AND OPTICS, 2007, 86 (04) :579-586

[2] Study on terahertz spectra of SO2 and H2S [J].

Cai He ;

Wang Dong ;

Shen JingLing .

SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY, 2013, 56 (04) :685-690

[3] High-resolution far-infrared spectroscopy at NSLS beamline U12IR [J].

Carr, G. L. ;

Smith, R. J. ;

Mihaly, L. ;

Zhang, H. ;

Reitze, D. H. ;

Tanner, D. B. .

INFRARED PHYSICS & TECHNOLOGY, 2008, 51 (05) :404-406

[4] 2.75 THz tuning with a triple-DFB laser system at 1550 nm and InGaAs photomixers [J].

Deninger, Anselm J. ;

Roggenbuck, A. ;

Schindler, S. ;

Preu, S. .

JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES, 2015, 36 (03) :269-277

[5] FOURIER SELF-DECONVOLUTION - A METHOD FOR RESOLVING INTRINSICALLY OVERLAPPED BANDS [J].

KAUPPINEN, JK ;

MOFFATT, DJ ;

MANTSCH, HH ;

CAMERON, DG .

APPLIED SPECTROSCOPY, 1981, 35 (03) :271-276

[6] Study of broadband THz time-domain spectroscopy at different relative humidity levels [J].

Lin, Chiajen ;

Ho, Ichen ;

Zhang, X. C. .

CHINESE OPTICS LETTERS, 2012, 10 (04) :1

[7] Terahertz photomixing in high energy oxygen- and nitrogen-ion-implanted GaAs [J].

Mayorga, I. Camara ;

Michael, E. A. ;

Schmitz, A. ;

van der Wal, P. ;

Guesten, R. ;

Maier, K. ;

Dewald, A. .

APPLIED PHYSICS LETTERS, 2007, 91 (03)

[8] THz detection of small molecule vapors in the atmospheric transmission windows [J].

Melinger, Joseph S. ;

Yang, Yihong ;

Mandehgar, Mahboubeh ;

Grischkowsky, D. .

OPTICS EXPRESS, 2012, 20 (06) :6788-6807

[9] All-semiconductor room-temperature terahertz time domain spectrometer [J].

Mihoubi, Zakaria ;

Wilcox, Keith G. ;

Elsmere, Stephen ;

Quarterman, Adrian ;

Rungsawang, Rakchanok ;

Farrer, Ian ;

Beere, Harvey E. ;

Ritchie, David A. ;

Tropper, Anne ;

Apostolopoulos, Vasileios .

OPTICS LETTERS, 2008, 33 (18) :2125-2127

[10]

Mikhailenko C.N., 2005, Atmos. Oceanic Opt, V18, P685

← 1 2 3 →